Casting Pressure Seal Flanged Swing Check Valve 900LB
A pressure-seal cast steel swing check valve rated to Class 900 that automatically stops reverse flow in high-pressure lines.

Built for elevated-pressure service, this cast steel swing check valve uses a pressure-seal bonnet that tightens its seal as line pressure rises, making it dependable in demanding power and process duty. The swinging disc opens with forward flow and closes automatically on reversal to protect pumps and upstream equipment. Flanged end connections and robust cast steel construction make it a strong choice for steam, hydrocarbon and high-temperature pipelines through Class 900 and beyond.
Specifications
Key Features
- Pressure-seal bonnet for high-pressure integrity
- Automatic swing-disc non-return action
- Flanged raised face or RTJ ends
- Cast steel construction
- Suited to Class 900 service
Options
- NACE compliant trim
- Special materials on request
- Soft or metal seating
Standards & Certifications
- API 598
- NACE compliant (optional)
- API 6D
Dimensions
| Sizes | L / L1 | H |
| 2″ | 14-1/2 (368) | 9-1/4 (235) |
| 3″ | 15 (381) | 9-1/2 (241) |
| 4″ | 18 (457) | 11 (279) |
| 6″ | 24 (610) | 13-3/4 (349) |
| 8″ | 29 (737) | 18 (457) |
| Sizes | L / L1 | H |
| 2″ | 14-1/2 (368) | 8-3/8 (213) |
| 3″ | 18-1/2 (470) | 9-1/4 (235) |
| 4″ | 21-1/2 (546) | 11 (279) |
| 6″ | 27-3/4 (705) | 13-3/4 (349) |
| 8″ | 32-3/4 (832) | 18 (457) |
| Sizes | L / L1 | H |
| 2″ | 17-3/4 (451) | 13 (330) |
| 3″ | 22-3/4 (578) | 16 (406) |
| 4″ | 26-1/2 (673) | 16 (406) |
| 6″ | 36 (914) | 23 (584) |
| 8″ | 40-1/4 (1022) | 28-1/2 (724) |
Get in Touch
Have a question or ready to order? Reach out and our team will get back to you with pricing and availability.
- Phone1300 62 4020
- International+61-8-9377 0449
- Emailinfo@PRPL.com.au
- AddressPerth Warehouse
6/11 Guthrie Street, Osborne Park, WA 6017
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